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;;; PJMG.LSP
;;; Rutinas para Nyquist
; Some utilities and functions not defined in
; the released version of Nyquist
(defun set-current-file (cf)
(setf *CURRENT-FILE* cf))
(defun l () (load *CURRENT-FILE*))
;; A comment by Dannenberg on the following function:
;; This function takes an expression for a sound and
;; finds its peak value. This forces a computation of all
;; samples, which are saved in memory (4 bytes per sample).
;; The samples are then normalized and written to a file.
;; This should be fine for short examples, but is not
;; recommended for general use because you may run out
;; of memory. See the manual for more notes on normalization.
;;
(defun ss (m)
(let ((m-max (peak m NY:ALL)))
(s-save (scale (/ 1.0 m-max) m) NY:ALL *default-sound-file*
:play *soundenable*)))
(defun randi1 (fr dur)
(let ((d (get-duration dur)))
(snd-white *rslt* fr d)))
(defun randi2 (fr dur)
(at 0.0 (snd-white 0.0 fr dur)))
(defun randh1 (fr dur)
(let ((d (get-duration dur)))
(snd-compose (noise d) (quantize (ramp d) (round (* fr d))))))
(defun rndh2 (fr dur)
(at 0.0 (snd-compose (noise dur)
(quantize (ramp dur) (round (* fr dur))))))
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